It turned out that the apt is even more amazing than i'd expected!! First of all, it's located on the 24-th floor of the building, and so it has a great view on a city from livingroom, bedroom and balcony, through bottom-to-top windows. Mam and her husband were a very friendly hosters, they assisted and gave advises each time i had any questions. The another great thing is that there is a possibility to set up your own music using apt's soundsystem via bluetoothconnection. The apt is very cozy, clean, and had all things that (turned out) were very useful for me and my girlfriend. We've even preferred to stay in the apt rather than exploring Bangkok's sights first day-two :)